While all guys want a perfectly sculpted body, when it comes down to working out, many of us have more excuses than motivation. The gym's too far away. I've had a rough day at work and I'm tired. I'm addicted to the Internet. Blah, blah, blah.

Well, you can kiss those excuses goodbye.

* Can't make it to the gym? We give you three workouts that can be done at home.

* Don't have a lot of time? Give us a mere 20 minutes three times a week, and we'll hit all the major muscles of your body.

* Don't have a lot of equipment? Try one of three different routines: a workout for those of you with only a barbell, weight plates and a bench; a workout for those with only dumbbells and a bench; and one for you poor saps who don't have any equipment at all.

So what's your excuse now? Pry yourself away from that computer screen and try these quick muscle-building regimens

Whether you're new to weight training or are a veteran lifter, you will benefit from these workouts, especially if you fit one of these profiles:

* The guy who works out consistently, but is about to enter a busy period that won't leave him time to complete his regular workout. Our clock-conscious routines will help you maintain your muscle and conditioning.

* The beginner who isn't quite ready to join a gym. These routines will acclimate you to training, and help you learn basic exercises and develop neuromuscular coordination.

* The experienced exerciser looking for an additional workout routine. If you're currently doing a three-day body-part-split and would like to add a fourth day, any one of the workouts presented here provides a great way to hit your entire frame a second time during the week.

* The guy who has hit a plateau in his training program and needs a shock routine. One of these 20-minute full-body regimens will give your body a whole new stimulus.

* The equipment-challenged guy. You don't need a full array of iron to get a complete workout--just a barbell, some dumbbells of your own body weight.

WORKOUT #1

THE NO-EQUIPMENT-NECESSARY WORKOUT

When to use it: Having no access to equipment shouldn't prevent you from getting into shape. A body-weight-only program does have a few drawbacks--mainly, it's hard to manipulate your intensity by increasing the weight load on the muscles, and you really can't effectively work "puling" muscles such as back and biceps. But this program can be just the ticket if you're a beginner trying to break into the habit of training before getting some equipment or a gym membership; if you're traveling and want to maintain your shape on the road; or if you don't have the time to do your regular training routine but you want to do something.

1. BODY-WEIGHT SQUAT (legs) Put your hands on your hips or fold them over your chest (1a). From a standing position, feet about shoulder-width apart, squat down until both knees reach 90 degrees (1b). As you lower yourself, keep your lower back slightly arched, head up, and stick your glutes out as if you were going to sit in a chair. Also, be sure that your knees aren't out past your toes as you descend--if they are, you're not moving your glutes back far enough on the descent. Once you reach the bottom position, flex through your quads, hamstrings and glutes to power yourself back up to a standing position and repeat.

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2. SIDE-TO-SIDE LUNGE (legs) With your hands on your hips, assume a comfortable stance, feet shoulder-width apart, head up and torso erect (2a). From there, step with your right leg straight out to your side, as deep as you can go without moving your left foot. Plant your right foot and bend your right knee to 90 degrees (2b). Then, flexing the muscles of your thigh, push yourself back up to a standing position and repeat the movement with your left leg. Alternate side to side in this fashion until you've completed 10 reps per leg.

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3. INVERTED PUSH-UP (shoulders) Place your feet on a chair and your hands out in front of you at shoulder-width. Without moving your feet, creep your hands backward until your body is bent almost 90 degrees and your head is facing the floor. Press up until your arms are straight--you should resemble an inverted V (3a)--then slowly lower your head toward the floor until your arms are almost bent 90 degrees (3b) and repeat.